Introducing The Oris Caliber 400
Oris has announced their newest in-house movement today in the caliber 400. The movement joins a growing stable of in-house offerings from the Swiss brand, however the caliber 400 stands apart for a few reasons, and is positioned to be the brand?s most accessible ever. Referred to as a ?new standard?, the caliber 400 offers a novel take on some basic movement architecture in the name of efficiency, and something probably not discussed enough when it comes to new mechanical movements: longevity. On that front, Oris is standing behind their claims with an impressive 10 year warranty.
The biggest departure from other in-house movements we?ve seen from Oris in recent years is the move to an automatic winding system from their traditional hand-wound calibers. The lengthy power reserves of these movements, a very healthy 10 days, was something of a necessity, and it?s a trait retained by the caliber 400, which uses twin mainsprings to store 5 days of reserve. Attaining that number without brute force (e.g. bigger springs & barrels) required reducing torque in the mainspring to help conserve power, as well as reducing pressure on moving parts. A new wheel design is also being used that delivers power more efficiently, reducing parasitic drivetrain loss so to speak. The net result is 5 days of reserve delivering 85% of the mainspring?s energy to the escapement, vs the 70% typically seen in automatic movements.Â
The automatic winding system hasn?t been taken for gran...
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